From top to bottom, I'd say Bulgarian/Arsenal, Polish, Hungarian, Chinese, Yugoslavian, Romanian. I probably forgot some but those are the main ones. For the most part, they're all AKs and they should all be good to go. I'd stay away from home builds unless you know the builder well.

I'd swap chinese and polish around, besides the pole rifles all depend on who built it no complete Pole rifles were ever imported. SAIGA/VEPR would be high on the list too. Romy and Yugo can swap positions depending on builder ie. Red Jacket Romy build > Century M70